internal/lsp/source/completion: remove "completion_" prefix from files

It felt a little redundant to have completion duplicated in the file
names. Happy to revert if you prefer it the original way.

Change-Id: Ibf14a739688d48ecce0b86154b3cbe4807b2f8b1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/266477
Trust: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
diff --git a/internal/lsp/source/completion/completion_builtin.go b/internal/lsp/source/completion/builtin.go
similarity index 100%
rename from internal/lsp/source/completion/completion_builtin.go
rename to internal/lsp/source/completion/builtin.go
diff --git a/internal/lsp/source/completion/completion_format.go b/internal/lsp/source/completion/format.go
similarity index 100%
rename from internal/lsp/source/completion/completion_format.go
rename to internal/lsp/source/completion/format.go
diff --git a/internal/lsp/source/completion/completion_keywords.go b/internal/lsp/source/completion/keywords.go
similarity index 100%
rename from internal/lsp/source/completion/completion_keywords.go
rename to internal/lsp/source/completion/keywords.go
diff --git a/internal/lsp/source/completion/completion_labels.go b/internal/lsp/source/completion/labels.go
similarity index 100%
rename from internal/lsp/source/completion/completion_labels.go
rename to internal/lsp/source/completion/labels.go
diff --git a/internal/lsp/source/completion/completion_literal.go b/internal/lsp/source/completion/literal.go
similarity index 100%
rename from internal/lsp/source/completion/completion_literal.go
rename to internal/lsp/source/completion/literal.go
diff --git a/internal/lsp/source/completion/completion_package.go b/internal/lsp/source/completion/package.go
similarity index 100%
rename from internal/lsp/source/completion/completion_package.go
rename to internal/lsp/source/completion/package.go
diff --git a/internal/lsp/source/completion/completion_printf.go b/internal/lsp/source/completion/printf.go
similarity index 100%
rename from internal/lsp/source/completion/completion_printf.go
rename to internal/lsp/source/completion/printf.go
diff --git a/internal/lsp/source/completion/completion_printf_test.go b/internal/lsp/source/completion/printf_test.go
similarity index 100%
rename from internal/lsp/source/completion/completion_printf_test.go
rename to internal/lsp/source/completion/printf_test.go
diff --git a/internal/lsp/source/completion/completion_snippet.go b/internal/lsp/source/completion/snippet.go
similarity index 100%
rename from internal/lsp/source/completion/completion_snippet.go
rename to internal/lsp/source/completion/snippet.go
diff --git a/internal/lsp/source/completion/completion_statements.go b/internal/lsp/source/completion/statements.go
similarity index 100%
rename from internal/lsp/source/completion/completion_statements.go
rename to internal/lsp/source/completion/statements.go