file_input should not write to db when deleting files

[djaglowski]

Description of Changes

Please check that the PR fulfills these requirements

• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)
• Add a changelog entry (for non-trivial bug fixes / features)
• CI passes

[djaglowski]

Log Files	Logs / Second	CPU Avg (%)	CPU Avg Δ (%)	Memory Avg (MB)	Memory Avg Δ (MB)
1	1000	1.344888	-0.103408456	129.97212	+2.286377
1	5000	4.293094	-0.7760515	140.65706	+2.9255066
1	10000	9.517353	-0.65542316	141.67564	-0.5856781
1	50000	46.15607	+0.20759201	172.0221	-3.7212982
1	100000	92.41076	+1.1145935	244.00243	+7.4835663
10	100	2.0173051	+0.08626878	132.11409	-0.7157898
10	500	5.862171	-0.034642696	140.53476	-2.5669403
10	1000	11.000033	+0.051555634	146.7209	+5.466858
10	5000	51.000275	-4.7260666	179.24947	-1.8721619
10	10000	108.7158	+9.194611	225.74434	+10.11557

[codecov]

Codecov Report

Merging #442 (41a62f0) into master (c91388b) will increase coverage by 0.06%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #442      +/-   ##
==========================================
+ Coverage   72.74%   72.80%   +0.06%     
==========================================
  Files         126      126              
  Lines        8209     8209              
==========================================
+ Hits         5971     5976       +5     
+ Misses       1731     1721      -10     
- Partials      507      512       +5     

Impacted Files	Coverage Δ
operator/builtin/input/file/file.go	76.44% <100.00%> (-2.09%)	⬇️
operator/builtin/output/newrelic/newrelic.go	74.38% <0.00%> (+0.83%)	⬆️
operator/builtin/output/otlp/otlp.go	68.13% <0.00%> (+3.30%)	⬆️
operator/builtin/input/tcp/tcp.go	78.72% <0.00%> (+3.55%)	⬆️

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